test_subprocess.py 文件源码

def __enter__(self):
        """Try to save previous ulimit, then set it to (0, 0)."""
        if resource is not None:
            try:
                self.old_limit = resource.getrlimit(resource.RLIMIT_CORE)
                resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
            except (ValueError, resource.error):
                pass

        if sys.platform == 'darwin':
            # Check if the 'Crash Reporter' on OSX was configured
            # in 'Developer' mode and warn that it will get triggered
            # when it is.
            #
            # This assumes that this context manager is used in tests
            # that might trigger the next manager.
            value = subprocess.Popen(['/usr/bin/defaults', 'read',
                    'com.apple.CrashReporter', 'DialogType'],
                    stdout=subprocess.PIPE).communicate()[0]
            if value.strip() == b'developer':
                print "this tests triggers the Crash Reporter, that is intentional"
                sys.stdout.flush()